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In this update:
The westbound SR 520 off-ramp to Montlake Boulevard will be closed nightly for four nights in a row starting Monday, Aug. 7, so crews can install drainage.
Next Monday through Thursday, crews will close the ramp each night at 10 p.m. and then reopen it at 6 the following mornings. Note that the ramp to Lake Washington Boulevard will remain open so drivers can still exit to the Montlake neighborhood.
 Crews will close SR 520 for the entire weekend starting at 11 p.m. Friday, Aug. 11, until 5 a.m. Monday, Aug. 14 to build the connection to the new eastbound bridge we're building over Union Bay.
Here are the closure’s limits:
- Eastbound closed: Montlake Boulevard to 92nd Avenue Northeast
- Westbound closed: 92nd Avenue Northeast to I-5
The SR 520 Trail remains open during this closure.
Fred Hutch Obliteride on Saturday, Aug. 12
Look for a bunch of extra bikes around the UW campus early Saturday morning when Obliteride kicks off its annual bike rides to help cure cancer faster by raising funds for the Fred Hutchinson Cancer Center. There are 25-, 50- and 100-mile rides that all start at 6:30 a.m. at the UW’s E-18 parking lot. All rides travel across the SR 520 Trail.
We’ve worked with our Montlake Project contractor, Graham, to reopen Lake Washington Boulevard between 24th Avenue East and Montlake Boulevard and the associated westbound SR 520 off-ramp two days earlier than scheduled. The street and off-ramp are now scheduled to open at noon today, Aug. 4.
This closure started July 23 and includes utility and drainage work, paving, and realigning Lake Washington Boulevard. The early opening also allows for better traveler access during Seafair weekend.
Miss our July Montlake Project online construction meeting, or want a refresher? You can check out our meeting presentation or grab some popcorn and watch the video recording on YouTube.
We’re holding our next Montlake Project monthly meeting virtually at 12:30 p.m. Wednesday, Aug. 16. Join us to learn more about current and upcoming construction activities, including planned street and highway closures. Register below to attend and participate in a Q&A.
Date/Time: Wednesday, Aug. 16 at 12:30 p.m.
WSDOT’s SR 520/I-5 Express Lanes Connection Project (I-5 Connection Project) is building a reversible transit/HOV ramp between SR 520 and I-5. The project is one part of a coordinated, regional effort between Sound Transit, King County Metro, the Seattle Department of Transportation and WSDOT to improve multimodal connections and transit service between Seattle and the Eastside
In 2021, WSDOT and its partner agencies decided to speed up the I-5 Connection Project’s construction due to the rising need for transit from the Eastside. The four agencies signed a letter of understanding (LOU) to open the ramp in 2023. WSDOT planned to open it for a year and then close it once construction began on the Portage Bay Bridge and Roanoke Lid Project.
Since signing the LOU, however, the agencies have all faced project delays of their own. The delays stem from a four-month concrete-delivery strike, supply chain disruptions, high inflation, rising project costs, and other factors. As a result, we can no longer open the reversible ramp as planned. We now plan to open it at the end of the Portage Bay Bridge Project’s construction, currently scheduled for 2030. The revised ramp schedule will streamline Portage Bay Bridge project delivery, provide more space and access for the Portage Bay contractor, and potentially accelerate Portage Bay project construction – which would allow the reversible ramp to open sooner than 2030.
Though we’re postponing the new SR 520/I-5 ramp’s opening, the public will still benefit from mobility improvements we’ll complete next spring at the Mercer Street on- and off-ramp to and from I-5. We are modifying an existing ramp there for HOV and potential transit use between the I-5 express lanes and Mercer Street.
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Ongoing: Montlake Boulevard eastbound on-ramp closed weeknights
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July 23 – Aug. 4: Lake Washington Boulevard fully closed
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July 24 – Aug. 10: Westbound SR 520 off-ramp to East Roanoke Street closed weeknights through 8/10
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Aug. 7-10: Westbound SR 520 off-ramp to Montlake Boulevard closed nightly
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Aug. 11-14: SR 520 closed across Lake Washington; SR 520 Trail open
Check out the SR 520 Construction Corner map for the most up-to-date information on closures and construction impacts.
How to reach us and stay informed about SR 520 construction:
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Call or text our project-specific construction hotlines with pressing questions or concerns related to the:
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Montlake Project: 206-775-8885
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SR 520/I-5 Connection Project: 206-316-2559
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Call the SR 520 Program information line (206-200-9484, M-F 8 a.m. - 5 p.m.) with general SR 520 inquiries.
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Email SR 520 staff with your questions about the project or construction activities.
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Visit the SR 520 Construction Corner for the most up-to-date information on closures and construction impacts.
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Visit the SR 520 Program website to find general information about the project.
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Email Regina Glenn, WSDOT Megaprograms Diversity and Inclusion Manager, for more information about contracting opportunities.
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Follow us on Twitter @wsdot_520 to get key news and updates about the SR 520 program.
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View current Montlake Project construction photos, taken continuously day and night, by mounted construction cameras
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Share the ROTW listserv with your friends and neighbors
If you have difficulty understanding English, you may request language assistance services free of charge by calling (360) 705-7090 or emailing TitleVI@WSDOT.WA.GOV.
Español - Spanish servicios de traducción Aviso a personas con dominio limitado del idioma inglés: Si usted tiene alguna dificultad en entender el idioma inglés, puede, sin costo alguno, solicitar asistencia lingüística con respecto a esta información llamando al (360) 705-7090, o envíe un mensaje de correo electrónico a: TitleVI@WSDOT.WA.GOV.
中文 - Chinese 翻译服务 如果您难以理解英文,则请致电:(360) 705-7090,或给我们发送电子邮件: TitleVI@WSDOT.WA.GOV,请求获取免费语言援助服务。
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